Parkinson, H.; DeBolt, A. 2005. Propagation protocol for production of container (plugs) Lomatium triternatum (Pursh.) Coult. & Rose seeds. Native Plant Network. U.S. Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources. http://npn.rngr.net/propagation/protocols [Accessed 2020 July 1].